allow file length to be updated unless we're writing

right now, merely having the file open O_RDWR, or mapped,
precludes a length update from being reflected.

Change-Id: I7f732b053c392aa6cc1c8ad6de8e0f4bd6468728
Reviewed-on: http://gerrit.openafs.org/1841
Reviewed-by: Derrick Brashear <shadow@dementia.org>
Tested-by: Derrick Brashear <shadow@dementia.org>

diff --git a/src/afs/afs_vcache.c b/src/afs/afs_vcache.c
index 51566e77dc6ac66330ea78445624586c01e0c7a6..f5f9141d02af53aaff51597284de35d6361ffae1 100644 (file)
--- a/src/afs/afs_vcache.c
+++ b/src/afs/afs_vcache.c
@@ -1464,18 +1464,15 @@ afs_SimpleVStat(register struct vcache *avc,
     afs_size_t length;
     AFS_STATCNT(afs_SimpleVStat);
 
-#ifdef AFS_SGI_ENV
-    if ((avc->execsOrWriters <= 0) && !afs_DirtyPages(avc)
-       && !AFS_VN_MAPPED((vnode_t *) avc)) {
-#else
-    if ((avc->execsOrWriters <= 0) && !afs_DirtyPages(avc)) {
-#endif
 #ifdef AFS_64BIT_CLIENT
        FillInt64(length, astat->Length_hi, astat->Length);
 #else /* AFS_64BIT_CLIENT */
        length = astat->Length;
 #endif /* AFS_64BIT_CLIENT */
+
 #if defined(AFS_SGI_ENV)
+    if ((avc->execsOrWriters <= 0) && !afs_DirtyPages(avc)
+       && !AFS_VN_MAPPED((vnode_t *) avc)) {
        osi_Assert((valusema(&avc->vc_rwlock) <= 0)
                   && (OSI_GET_LOCKID() == avc->vc_rwlockid));
        if (length < avc->f.m.Length) {
@@ -1488,8 +1485,11 @@ afs_SimpleVStat(register struct vcache *avc,
            AFS_GLOCK();
            ObtainWriteLock(&avc->lock, 67);
        }
+    }
 #endif
-       /* if writing the file, don't fetch over this value */
+
+    if (!afs_DirtyPages(avc)) {
+       /* if actively writing the file, don't fetch over this value */
        afs_Trace3(afs_iclSetp, CM_TRACE_SIMPLEVSTAT, ICL_TYPE_POINTER, avc,
                   ICL_TYPE_OFFSET, ICL_HANDLE_OFFSET(avc->f.m.Length),
                   ICL_TYPE_OFFSET, ICL_HANDLE_OFFSET(length));